WO2009066834A1

WO2009066834A1 - Shoes with elasticity enhancing structure for promoting secretion of growth hormone and enhancing performance

Info

Publication number: WO2009066834A1
Application number: PCT/KR2008/000809
Authority: WO
Inventors: Young Jin Moon
Original assignee: Young Jin Moon
Priority date: 2007-11-20
Filing date: 2008-02-12
Publication date: 2009-05-28
Also published as: CN101583293A; CN101583293B

Abstract

The present invention discloses shoes capable of promoting the secretion of a growth hormone by transferring stimulation to feet, absorbing or minimizing shock transferred to foot-soles, and restoring their original shapes within a short time after eliminating an external force. A shoe according to the present invention comprises a main body portion for accommodating a foot of a user; a bottom portion formed integrally with the main body portion and including a bottom sole and a midsole integrally formed on the bottom sole; and an elasticity enhancing structure installed inside of the midsole of the bottom portion. The elasticity enhancing structure may be installed inside of the midsole corresponding to a heel of the user. The elasticity enhancing structure may be divided into a plurality of unit structures and installed throughout the entire region of the midsole, or has a size corresponding to the entire region of the midsole. Here, the elasticity enhancing structure may comprise a base having a predetermined volume and a restoring member mounted inside of the base. Further, the elasticity enhancing structure may comprise a base having a predetermined volume, and upper and lower restoring members mounted at upper and lower portions inside of the base at a predetermined interval. An elasticity enhancing structure with another configuration may comprise a base having a predetermined volume and one or more space portions defined inside of the base. A restoring member may be arranged above or below the space portion. In addition, two restoring members may be arranged above and below the space portion, respectively.

Description

SHOES WITH ELASTICITY ENHANCING STRUCTURE FOR

PROMOTING SECRETION OF GROWTH HORMONE AND

ENHANCING PERFORMANCE

Technical Field

[1] The present invention relates to shoes, and more particularly, to shoes capable of promoting the secretion of a growth hormone, absorbing and dispersing shock, and obtaining a strong repulsive force. Background Art

[2] In general, the growth of a human being means the increase in an overall size or height of a body by the multiplication and growth of cells. Particularly, the height of the human being is increased due to the activation of the secretion of a growth hormone or the cell division of growth plates.

[3] The growth hormone involved in the height growth of the human being is produced at the existence of stimulation of neurons entering the hypothalamus due to factors such as exercise, anxiety, stress, powerful physical strength, and the like. The growth hormone not only promotes the release of an insulin-like growth factor (IGF) playing an important role in synthesis of protein, growth of a skeleton and multiplication of cells, but also stimulates the synthesis and release of IGF in other cells to thereby influence the promotion of the growth.

[4] One of the strong stimulations promoting the secretion of the growth hormone is exercise. The secretion of the growth hormone caused by the exercise is associated with intensity, continuation time and a period of the exercise. Particularly, as the exercise intensity is continuously increased, the secretion of the growth hormone is promoted.

[5] Accordingly, in case of a walk or run, a strength and amount of shock imparted from the ground to the human body should be increased or the manifestation of physical strength should be facilitated in order to promote the secretion of the growth hormone.

[6] In addition, the growth of the height mostly occurs due to the growth of bones by the cell division in the growth plates. This is because the height is defined by the bones of the human body stacked on each other and organ other than the bones rarely influences the height.

[7] The growth of the bones is made mainly in the growth plates. Here, the growth plates indicate portions newly creating bones and are generally positioned at upper and lower portions of an elongated bone in the body to thereby make the bones grow in both directions. Thus, when the growth plates are stimulated by an artificial physical means In addition to natural stimulation, the growth plates actively perform the cell division to subsequently increase the height.

[8] The stimulation of the growth plates or the promotion of the secretion of the growth hormone described above can be obtained by a vertical exercise using the gravity or weight, such as jumping, rope skipping, basket ball, and the like, and can also be artificially induced by means of a certain tool or method in everyday life.

[9] Therefore, in a walk or exercise, stimulation can be transferred to feet through shoes to promote the secretion of the growth hormone and stimulate the growth plates, thereby increasing the height. To this end, it is preferable that specific portions of the shoes, for example, bottom members which are in contact with foot-soles, have a hardness over a predetermined value. Moreover, it is preferable that a load is transferred to the human body with a repulsive force over a predetermined value.

[10] Meanwhile, one of the main functions of shoes is to absorb or minimize shock transferred to the foot-soles during the walk or exercise. It is thus preferable to prevent a user wearing the shoes from being hurt by the shock. Disclosure of Invention Technical Problem

[11] An object of the present invention is to provide shoes capable of promoting the secretion of a growth hormone by transferring stimulation to feet in a walk or exercise, absorbing or minimizing shock transferred to foot-soles, and restoring their original shapes within a short time by excellent elasticity after eliminating an external force.

Technical Solution

[12] According to an aspect of the present invention for achieving the object, there is provided a shoe, which includes a main body portion for accommodating a foot of a user; and a bottom portion formed integrally with the main body portion, wherein a rear foot portion of the bottom portion corresponding to a heel of the user has a hardness of 66 to 85 degrees when being measured by SRIS 0101 Asker C type hardness meter of the Japan society of rubber industry standard.

[13] According to another aspect of the present invention, there is provided a shoe, which includes a main body portion for accommodating a foot of a user; a bottom portion formed integrally with the main body portion and including a bottom sole and a midsole integrally formed on the bottom sole; and an elasticity enhancing structure installed inside of the midsole of the bottom portion.

[14] The elasticity enhancing structure may be installed inside of the midsole corresponding to a heel of the user. The elasticity enhancing structure may be divided into a plurality of unit structures and installed throughout the entire region of the midsole, or has a size corresponding to the entire region of the midsole. [15] Here, the elasticity enhancing structure may comprise a base having a predetermined volume and a restoring member mounted inside of the base. Further, the elasticity enhancing structure may comprise a base having a predetermined volume, and upper and lower restoring members mounted at upper and lower portions inside of the base at a predetermined interval.

[16] An elasticity enhancing structure with another configuration may comprise a base having a predetermined volume and one or more space portions defined inside of the base. A restoring member may be arranged above or below the space portion. In addition, two restoring members may be arranged above and below the space portion, respectively.

[17] In the meantime, the space portion may be formed in any one of length and width directions of the base.

[18] Preferably, the elasticity enhancing structure included in the shoe according to the present invention has a hardness of 45 to 60 degrees when being measured by Japanese industrial standards (JIS) K6301 A type hardness meter, and has an elastic modulus of 60 to 80 %.

[19] In order to satisfy the foregoing conditions, the base is made of any one of natural rubber, natural rubber compound and poly butadiene rubber, and the restoring member is made of any one of a fiber glass Teflon coated glass fiber and a carbon fiber.

Advantageous Effects

[20] According to shoes of the present invention, elasticity enhancing structures with sufficient hardness, which are installed in rear foot portions or midsoles, transfer stimulation to feet of a user in a walk or exercise, thereby promoting the secretion of a growth hormone.

[21] At the same time, the elasticity enhancing structures with excellent elasticity of the shoes according to the present invention absorb or minimize shock transferred from the ground to foot-soles, thereby preventing the user from getting hurt. In addition, after external force is eliminated, the elasticity enhancing structures restore their original shapes within a short time to thereby generate a strong repulsive force. Such a repulsive force is transferred to the feet to thereby promote the secretion of the growth hormone.

[22] Moreover, the strong elastic force of the elasticity enhancing structures improves the performance in a high jump and a run. Brief Description of the Drawings

[23] FIG. 1 is a perspective view of a shoe according to the present invention;

[24] FIG. 2 is a graph comparing an activity of a growth hormone when a user wears shoes according to a first embodiment of the present invention with an activity of a growth hormone when a user wears general shoes;

[25] FIG. 3 is a detailed view of a portion corresponding to portion A of FIG. 1, showing the configuration of a shoe according to a second embodiment of the present invention;

[26] FIG. 4 is a perspective view of an elasticity enhancing structure of FIG. 3;

[27] FIG. 5 is a sectional view taken along line B-B of FIG. 4 ( FIG. 3); and

[28] FIGS. 6 to 14 are sectional views corresponding to FIG. 5, illustrating elasticity enhancing structures of respective examples of the present invention. Best Mode for Carrying Out the Invention

[29] Hereinafter, shoes according to the present invention will be described in detail with reference to the accompanying drawings.

[30] FIG. 1 is a perspective view of a shoe according to the present invention.

[31] In a shoe 100 according to a first embodiment of the present invention, an average hardness of a bottom portion 120, preferably, a rear foot portion corresponding to a heel of a user ranges from 66 to 85 degrees, which has been measured by SRIS 0101 Asker C type hardness meter of the Japan society of rubber industry standard.

[32] The bottom portion 120 of the shoe 100 includes a bottom sole, a midsole 122 formed integrally with the bottom sole, and an insole positioned on the midsole 122. However, the midsole 122 absorbs most of shock imparted to the shoe 100. Accordingly, it is preferable that the midsole 122, particularly, the rear foot portion has the hardness in the aforementioned range.

[33] When the user wears the shoes 100 and takes a walk, run or exercise, the bottom portions 120 having the aforementioned hardness stimulate the user's rear foot portion. Therefore, growth plates of feet, eras regions and femur regions are stimulated to promote the secretion of a growth hormone.

[34] As described above, in order for the rear foot portion of the bottom portion 120 to have a hardness of 66 to 85 degrees, a hardness control member for easily controlling hardness is preferably mounted at the rear foot portion of the midsole 122.

[35] The harness control member may be made of any one of rubber, polyurethane, phylon, silicone, and the like, but is not limited thereto. That is, the hardness control member may be made of any material if it transfers stimulation and has excellent elasticity. Preferably, the hardness control member has a size corresponding to the rear foot portion of the midsole 122.

[36] When the hardness control member is mounted at the rear foot portion of the bottom portion 120 of the shoe 100, stimulation imparted through the shoe 100 is transferred to the user's rear foot portion, thereby promoting the secretion of the growth hormone and stimulating the growth plates. As a result, the cell division in the growth plates is facilitated, thereby accelerating the growth of bones. [37] The following experiment has been made to measure an activation degree of the secretion of the growth hormone by the shoes according to the above embodiment. [38] The experiment of the growth hormone production by an average hardness of rear foot portions of shoes was performed on twenty subjects (55±2kg: 7 persons, 60+ lkg:

6 persons, 65+ lkg: 6 persons). [39] Specifically, the twenty subjects wore each kind of shoes for one day and jogged 2.4 km, wherein rear foot portions of bottom portions of the shoes had a hardness of 46 to

55 degrees, 56 to 65 degrees, 66 to 75 degrees, and 76 to 85 degrees, which is hardness measured by SRIS 0101 Asker C type hardness meter of the Japan society of rubber industry standard (hereinafter, referred to as 'hardness'). [40] The twenty subjects were blood-collected before an exercise to measure a normal growth hormone production volume and after jogging to measure a growth hormone secretion volume by hardness of shoes. [41] The collected blood was analyzed by Green Cross Medical Corporation according to a 1 RMA test using a reagent, Diagnostic Use GH Kit. The blood analysis result is shown in a graph of FIG. 2. [42] Among the subjects wearing the shoes of which the rear foot portions had an average hardness of 46 to 55 degrees, the subjects of 55 kg had an average growth hormone of

10.7 ng/ml, the subjects of 60 kg had an average growth hormone of 9.2 ng/ml, and the subjects of 65 kg had an average growth hormone of 7.1 ng/ml. An average value by weight was 9.0 ng/ml. [43] Among the subjects wearing the shoes of which the rear foot portions had an average hardness of 56 to 65 degrees, the subjects of 55 kg had an average growth hormone of

15.5 ng/ml, the subjects of 60 kg had an average growth hormone of 9.9 ng/ml, and the subjects of 65 kg had an average growth hormone of 19.9 ng/ml. An average value by weight was 15.1 ng/ml.

[44] Among the subjects wearing the shoes of which the rear foot portions had an average hardness of 66 to 75 degrees, the subjects of 55 kg had an average growth hormone of

36.6 ng/ml, the subjects of 60 kg had an average growth hormone of 36.2 ng/ml, and the subjects of 65 kg had an average growth hormone of 32.9 ng/ml. An average value by weight was 35.2 ng/ml.

[45] Among the subjects wearing the shoes of which the rear foot portions had an average hardness of 76 to 85 degrees, the subjects of 55 kg had an average growth hormone of 43.1 ng/ml, the subjects of 60 kg had an average growth hormone of 24.1 ng/ml, and the subjects of 65 kg had an average growth hormone of 28.9 ng/ml. An average value by weight was 32.0 ng/ml.

[46] According to the above-described result, as compared with general shoes of which the bottom portions had an average hardness below 60 to 65 degrees to improve a wear sensation, the shoes of which the rear foot portions had an average hardness of 66 to 85 degrees produced a large volume of growth hormone.

[47] Meanwhile, when the rear foot portions had a hardness over 86 degrees, the subjects were not able to jog 2.4 km due to the excessive hardness. It was thus impossible to obtain the experiment result.

[48] Hereinafter, shoes according to a second embodiment of the present invention will be described.

[49] FIG. 3 is a detailed view of a portion corresponding to portion A of FIG. 1. Like the shoe according to the first embodiment, a shoe 100 according to the second embodiment of the present invention includes a main body portion 110 and a bottom portion 120 formed integrally with the main body portion 110. The main body portion 110 defines a space for accommodating a foot of a user, and the bottom portion 120 is a member which is in contact with a foot-sole of the user.

[50] The shoe 100 according to the second embodiment of the present invention further includes an elasticity enhancing structure 130 mounted inside a midsole 122 which is a component member of the bottom portion 120.

[51] In FIG. 3, the single elasticity enhancing structure 130 is arranged in a region of the midsole 122 (i.e., a region corresponding to a heel of the user). However, the present invention is not limited thereto.

[52] That is, a plurality of elasticity enhancing structures may be arranged in the entire region of the midsole 122 at predetermined intervals, or the single elasticity enhancing structure 130 may be arranged in the entire area of the midsole 122.

[53] When the user wears the shoes 100 and walks or runs, the elasticity enhancing structures 130 not only transfer a load to the user'sfeet to cause a growth hormone to be most actively secreted, but also absorb shock imparted to the shoes 100 to prevent shock from being transferred to the user'sfeet. Hereinafter, the configuration of the elasticity enhancing structure 130 will be explained.

[54] FIG. 4 is a perspective view of the elasticity enhancing structure 130 of FIG. 3, and

FIG. 5 is a sectional view taken along line B-B of FIG. 4, wherein restoring members 132 and 133 of FIG. 5 are not shown in FIG. 4.

[55] The elasticity enhancing structure 130, which is one of the component members of the shoe 100 according to the present invention, includes a base 131 having a predetermined volume, and one or more restoring members 132 and 133 mounted inside of the base 131.

[56] The structures and properties of the base 131 and the restoring members 132 and 133 of the elasticity enhancing structure 130 will be described.

[57] Base 131

[58] The base 131 is made of a material with a high elastic modulus (40 to 90 %), e.g., natural rubber, poly butadiene rubber or silicone. A plurality of space portions 134 are defined therein.

[59] In FIG. 3, four space portions 134 having a predetermined length are formed in a width direction of the base 131, but the present invention is not limited thereto.

[60] That is, the number of the space portions 134 is not limited, and may be formed in a length direction of the base 131 (i.e., a length direction of the shoe). In addition, the space portions 134 may have their both ends blocked without penetrating through the base 131.

[61] In the shoe with the above-described configuration, the base 131 primarily absorbs shock imparted to the shoe, and the space portions 134 defined in the base 131 are deformed by the shock to secondarily absorb the shock, thereby considerably relieving the shock imparted to the foot of the user.

[62] Moreover, the space portions 134 are deformed by the external force applied to the shoe, and restored into their original shapes after the external force is removed. Thus, the elasticity enhancing structure 130 has excellent elasticity.

[63] Here, it is preferable that a thickness of the base 131 range from 6 to 10 mm and a height (diameter) of each space portion 134 be about 3 mm. However, it is obvious that the thickness of the base 131 and the height of the space portions 134 should be determined according to an overall size of the shoe.

[64] Restoring members 132 and 133

[65] The elasticity enhancing structure 130 further includes the restoring members 132 and 133 arranged inside of the base 131. The restoring members 132 and 133 may be made of a material that can be restored into the original shape as fast as possible, e.g., a fiber glass Teflon coating glass fiber, a glass fiber composite, a carbon fiber or a carbon fiber composite, and may be formed in the shape of a sheet or mesh.

[66] The restoring members 132 and 133 made of the aforementioned material disperse the external force concentrated on a specific region to thereby prevent stress concentration on a specific region of the foot. In addition, in a case where the elasticity enhancing structure 130 is deformed by the external force imparted to the shoe, the elasticity enhancing structure 130 restored into its original shape within a short time due to an excellent restoring force of the restoring members 132 and 133.

[67] In the meantime, referring to FIGS. 4 and 5, two restoring members, i.e., the upper restoring member 132 and the lower restoring member 133 are respectively arranged at upper and lower portions of the base 131, and four space portions 134 are formed between the upper restoring member 132 and the lower restoring member 133. However, the present invention is not limited to this configuration.

[68] For example, the space portion 134 may not be formed inside of the base 131, and the single restoring member 132 or 133 may be arranged at the upper or lower portion of the space portion 134. Otherwise, the upper and lower restoring members 132 and 133 may be respectively arranged at the upper and lower portions of the base 131 in which the space portion 134 is not defined.

[69] In addition, at least one space portion 134 may be formed inside of the base 131, and the single restoring member 132 or 133 may be selectively arranged above or below the space portions 134.

[70] Here, the space portion 134 formed inside of the base 131 of the elasticity enhancing structure 130 may be formed in the shape of a plate having a predetermined plane area like the restoring member 132 or 133 as well as a cylinder shown in the figures.

[71] In the elasticity enhancing structure 130 with the configuration of FIGS. 4 and 5, the high elastic modulus material layers (base 131) are formed in the top and bottom ends thereof, the upper restoring member 132 and the lower restoring member 133 having an excellent restoring force are arranged on upper and lower portions of the high elastic modulus material layers, respectively, and the high elastic modulus material layer (base 131) having the plurality of space portions 134 defined therein is positioned in a region between the upper restoring member 132 and the lower restoring member 133.

[72] Accordingly, the elasticity enhancing structure 130 relieves shock imparted to the foot of the user by absorbing shock imparted to the shoe, and rapidly restores its original shape by each constituent element. As a result, the above-described configuration of the elasticity enhancing structure 130 improves the exercise performance of the shoe such as quickness, elasticity, or the like, thereby enhancing propulsive force and jumping force.

[73] Meanwhile, the elasticity enhancing structure 130 should have predetermined hardness and elasticity to achieve the objects of the present invention, i.e., to promote the secretion of the growth hormone, to absorb shock imparted to the foot-sole, and to rapidly restore its original shape after the external force is removed.

[74] Preferably, the elasticity enhancing structure 130 used in the present invention has a hardness of 45 to 60 degrees, which has been measured by JIS K6301 A type hardness meter, and has an elastic modulus of 60 to 80 % at this hardness.

[75] The elasticity enhancing structure 130 can minimize the load transferred to the foot and maximize the secretion promotion of the growth hormone due to the aforementioned physical characteristics.

[76] Hereinafter, examples of the elasticity enhancing structure 130 will be explained.

[77] Examples

[78] A sample (base 131) having a length of 45 mm, a width of 70 mm and a height of 7.5 mm was prepared of poly butadiene rubber with a high elastic modulus. A space portion 134 having a diameter of 3 mm was optionally defined inside of the base 131 of the aforementioned size, and a mesh-shaped restoring member made of a fiber glass Teflon coated glass fiber was optionally arranged therein.

[79] In each example, the number and position of the space portion 134 and the restoring members 132 and 133 arranged inside of the base 131 of the elasticity enhancing structure 130 were set as shown in FIGS. 5 to 14.

[80] Example 1: An elasticity enhancing structure including a base 131 and a single restoring member 132 arranged inside of the base 131 (see FIG. 6).

[81] Example 2: An elasticity enhancing structure including a base 131, a single restoring member 132 arranged inside of the base 131, and a single space portion 134 defined below the restoring member 132 (see FIG. 7).

[82] Example 3: An elasticity enhancing structure including a base 131, a single restoring member 132 arranged inside of the base 131, and two space portions 134 defined below the restoring member 132 (see FIG. 8).

[83] Example 4: An elasticity enhancing structure including a base 131, a single restoring member 132 arranged inside of the base 131, and three space portions 134 defined below the restoring member 132 (see FIG. 9).

[84] Example 5: An elasticity enhancing structure including a base 131, a single restoring member 132 arranged inside of the base 131, and four space portions 134 defined below the restoring member 132 (see FIG. 10).

[85] Example 6: An elasticity enhancing structure including a base 131, and two restoring members 132 and 133 arranged inside of the base 131 (see FIG. 11).

[86] Example 7: An elasticity enhancing structure including a base 131, two restoring members 132 and 133 arranged inside of the base 131, and a single space portion 134 defined between the restoring members 132 and 133 (see FIG. 12).

[87] Example 8: An elasticity enhancing structure including a base 131, two restoring members 132 and 133 arranged inside of the base 131, and two space portions 134 defined between the restoring members 132 and 133 (see FIG. 13).

[88] Example 9: An elasticity enhancing structure including a base 131, two restoring members 132 and 133 arranged inside of the base 131, and three space portions 134 defined between the restoring members 132 and 133 (see FIG. 14).

[89] Example 10: An elasticity enhancing structure including a base 131, two restoring members 132 and 133 arranged inside of the base 131, and four space portions 134 defined between the restoring members 132 and 133 (see FIG. 5).

[90] The hardness of the respective elasticity enhancing structures with the above configurations was measured by JIS K6301 A type hardness meter, and the elasticity thereof was measured (through KSM 6518 standard test: an experiment of dropping a pendulum moving body from a maximum height toward an elastic body and expressing a height of the pendulum moving body rebounded by the collision with the elastic body as a percentage).

[91] The hardnesses and elastic moduli (%) of the elasticity enhancing structures of the respective examples are shown in Tables 1 and 2.

[92] [93] Table 1 [Table 1] [Table ]

No. Example 1 Example 2 Example 3 Example 4 Example 5

Hardness 50 52 50 50 51

Elastic modulus 75 75 69 70 72

[94] Table 2 [Table 2] [Table ]

No. Example 6 Example 7 Example 8 Example 9 Example 10

Hardness 52 52 55 54 51

Elastic modulus 64 62 65 66 65

[95] Comparative Examples [96] Samples having a length of 45 mm, a width of 70 mm and a height of 7.5 mm were respectively prepared in the same size as the inventive examples using phylon (Comparative Examples 1, 2 and 3), polyurethane (Comparative Example 4), general rubber (Comparative Example 5) and natural rubber (Comparative Example 6), which were materials used to form midsoles of general shoes.

[97] A space portion and a restoring member were not formed in the samples of Comparative Examples 1 to 6 unlike the samples of the inventive examples. [98] Hardness of the samples of comparative examples was measured by JIS K6301 A type hardness meter, and elastic moduli thereof were measured (through a KSM 6518 standard test).

[99] The hardnesses and elastic moduli (%) of the samples of the respective comparative example are shown in Table 3. [100] Table 3 [Table 3] [Table ]

[101] [102] As known from the above tables, the elasticity enhancing structures of Examples 1 to 10 have more excellent hardness and elasticity than the general members of Comparative Examples 1 to 4.

[103] Particularly, the general rubber and the natural rubber of Comparative Examples 5 and 6 have excellent hardness but weak elasticity. Meanwhile, the elasticity enhancing structures of Examples 1 to 10 have superior hardness and elasticity.

[104] The preferred embodiments of the present invention have been described only for illustrative purposes. Those skilled in the art can make various modifications, variations and supplementations within the spirit and scope of the invention. All such modifications, variations and supplementations are intended to be included within the scope of the invention as defined by the appended claims.

[105] For example, in FIG. 1, a sneaker is shown as the shoe according to the present invention. However, it is apparent that the elasticity enhancing structure applied to the present invention can be mounted in all types of shoes, e.g., men's shoes, women's shoes, military shoes, or the like.

Claims

[I] A shoe, comprising: a main body portion for accommodating a foot of a user; and a bottom portion formed integrally with the main body portion, wherein a rear foot portion of the bottom portion corresponding to a heel of the user has a hardness of 66 to 85 degrees when being measured by SRIS 0101

Asker C type hardness meter of the Japan society of rubber industry standard.

[2] The shoe as claimed in Claim 1, further comprising a hardness control member installed at a rear foot portion of a midsole of the bottom portion.

[3] The shoe as claimed in Claim 2, wherein the harness control member is made of any one of rubber, polyurethane, phylon and silicone.

[4] A shoe, comprising: a main body portion for accommodating a foot of a user; a bottom portion formed integrally with the main body portion and including a bottom sole and a midsole integrally formed on the bottom sole; and an elasticity enhancing structure installed inside of the midsole of the bottom portion.

[5] The shoe as claimed in Claim 4, wherein the elasticity enhancing structure is installed inside of the midsole corresponding to a heel of the user.

[6] The shoe as claimed in Claim 4, wherein the elasticity enhancing structure is divided into a plurality of unit structures and installed throughout the entire region of the midsole.

[7] The shoe as claimed in Claim 4, wherein the elasticity enhancing structure has a size corresponding to the entire region of the midsole.

[8] The shoe as claimed in Claim 4, wherein the elasticity enhancing structure comprises a base having a predetermined volume and a restoring member mounted inside of the base.

[9] The shoe as claimed in Claim 4, wherein the elasticity enhancing structure comprises a base having a predetermined volume, and upper and lower restoring members mounted at upper and lower portions inside of the base at a predetermined interval.

[10] The shoe as claimed in Claim 4, wherein the elasticity enhancing structure comprises a base having a predetermined volume and one or more space portions defined inside of the base.

[I I] The shoe as claimed in Claim 10, further comprising a restoring member arranged above the space portion.

[12] The shoe as claimed in Claim 10, further comprising a restoring member arranged below the space portion. [13] The shoe as claimed in Claim 10, further comprising two restoring members arranged above and below the space portion, respectively. [14] The shoe as claimed in Claim 10, wherein the space portion is formed in any one of length and width directions of the base. [15] The shoe as claimed in any one of Claims 4 to 10, wherein the elasticity enhancing structure has a hardness of 45 to 60 degrees when being measured by

Japanese industrial standards (JIS) K6301 A type hardness meter, and has an elastic modulus of 60 to 80 %. [16] The shoe as claimed in any one of Claims 8 to 10, wherein the base is made of any one of natural rubber, natural rubber compound, poly butadiene rubber and silicone. [17] The shoe as claimed in Claim 8 or 9, wherein the restoring member is made of any one of a fiber glass Teflon coated glass fiber, a glass fiber composite, a carbon fiber and a carbon fiber composite. [18] The shoe as claimed in Claim 8 or 9, wherein the restoring member has any one of a sheet shape and a mesh shape.